5 Signal Descriptions List

The following tables provide the details on signal names classified by the peripheral.

Table 5-1. Signal Descriptions List
Signal Name Function Type
Analog Comparators (AC)
AIN[7:0] AC Comparator Inputs Analog Input
CMP[3:0] AC Comparator Outputs Digital Output
Analog-to-Digital Converter (ADCx)
AIN[11:0] ADC Input Channels Analog Input
VREFA ADC Voltage External Reference A Analog Input
Digital-to-Analog Converter (DAC)
VOUT DAC Voltage output Analog Output
VREFA DAC Voltage External Reference A Analog Input
External Interrupt Controller (EIC)
EXTINT[15:0] External Interrupt Pins Digital Input
NMI External Non-Maskable Interrupt Pin Digital Input
Generic Clock Generator (GCLK)
GCLK_IO[7:0] Generic Clock (source clock inputs or generic clock generator output) Digital I/O
Custom Control Logic (CCL)
IN[11:0] Logic Inputs Digital Input
OUT[3:0] Logic Outputs Digital Output
Power Manager (PM)
RESET External Reset Pin (Active Level: LOW) Digital Input
Serial Communication Interface (SERCOMx)
PAD[3:0] SERCOM Inputs/Outputs Pads Digital I/O
Oscillators Control (OSCCTRL)
XIN Crystal or external clock Input Analog Input (Crystal Oscillator)/Digital Input (External Clock)
XOUT Crystal Output Analog Output
32.768 kHz Oscillators Control (OSC32KCTRL)
XIN32 32.768 kHz Crystal Oscillator or External Clock Input Analog Input (Crystal Oscillator)/Digital Input (External Clock)
XOUT32 32.768 kHz Crystal Oscillator Output Analog Output
Timer Counter (TCx)
WO[1:0] Waveform/PWM Outputs / Capture Inputs Digital I/O
Timer Counter (TCCx)
WO[7:0] Waveform/PWM Outputs Digital I/O
Peripheral Touch Controller (PTC)
X[15:0] PTC Outputs Digital Outputs
Y[31:0] PTC Inputs/Outputs Analog I/O
General Purpose I/O (PORT)
PA31 - PA30 / PA28 - PA27 / PA25 - PA00 General Purpose I/O Pin in Port A Digital I/O
PB31 - PB30 / PB25 - PB00 General Purpose I/O Pin in Port B Digital I/O
PC28 - PC24 / PC21 - PC05 / PC03 - PC00 General Purpose I/O Pin in Port C Digital I/O
Controller Area Network (CAN)
TX CAN Transmit Line Digital Output
RX CAN Receive Line Digital Input
Position Decoder (PDEC)
PDEC[2:0] PDEC inputs Digital Input
Serial Wire Debug interface
SWDIO Serial Wire Debug Bidirectional Data Digital I/O
SWCLK Serial Wire Debug Clock Digital Input
Note:
  1. Refer to Configuration Summary and Pinout and Packaging chapters for the list of peripherals, peripheral instances, channels, and input/output pins present in each variant.